const charset = "EUC-JP";
const ScriptableUnicodeConverter =
	Components.Constructor("@mozilla.org/intl/scriptableunicodeconverter",
			       "nsIScriptableUnicodeConverter");
var gConverter;

function error(inString, outString, msg){
    var dispIn = "";
    var dispOut = "";
    var i;
    for (i = 0; i < inString.length; ++i) {
	dispIn += " x" + inString.charCodeAt(i).toString(16);
    }
    if (outString.length == 0) {
	dispOut = "<empty>";
    } else {
	for (i = 0; i < outString.length; ++i) {
	    dispOut += " x" + outString.charCodeAt(i).toString(16);
	}
    }
    dump("\"" + dispIn + "\" ==> \"" + dispOut + "\"\n");
    do_throw("security risk: " + msg);
}

function test(inString) {
    var outString = gConverter.ConvertToUnicode(inString) +
	            gConverter.Finish();

    switch (outString.length) {
        case 0:
        case 1:
        case 2:
	    error(inString, outString, "Unexpected error");
	    break;
        case 3:
	    error(inString, outString, "3 byte sequence eaten");
	    break;
        case 4:
	    if (outString.charCodeAt(0) < 0x80 &&
		outString.charCodeAt(1) < 0x80 &&
		outString.charCodeAt(2) < 0x80 &&
		outString.charCodeAt(3) < 0x80) {
		error(inString, outString,
		      "3 byte sequence converted to 1 ASCII");
	    }
	    break;
        case 5:
	    if (outString != inString &&
		outString.charCodeAt(0) < 0x80 &&
		outString.charCodeAt(1) < 0x80 &&
		outString.charCodeAt(2) < 0x80 &&
		outString.charCodeAt(3) < 0x80 &&
		outString.charCodeAt(4) < 0x80) {
		error(inString, outString,
		      "3 byte sequence converted to 2 ASCII");
	    }
	    break;
        case 6:
	    if (outString != inString &&
		outString.charCodeAt(0) < 0x80 &&
		outString.charCodeAt(1) < 0x80 &&
		outString.charCodeAt(2) < 0x80 &&
		outString.charCodeAt(3) < 0x80 &&
		outString.charCodeAt(4) < 0x80 &&
		outString.charCodeAt(5) < 0x80) {
		error(inString, outString,
		      "3 byte sequence converted to 3 ASCII");
	    }
	    break;
    }
}

function run_test() {
    gConverter = new ScriptableUnicodeConverter();
    gConverter.charset = charset;

    var byte1, byte2, byte3;
    for (byte1 = 1; byte1 < 0x100; ++byte1) {
	for (byte2 = 1; byte2 < 0x100; ++byte2) {
	    if (byte1 == 0x8f) {
		for (byte3 = 1; byte3 < 0x100; ++byte3) {
		    test(String.fromCharCode(byte1, byte2, byte3) + "foo");
		}
	    } else {
		test(String.fromCharCode(byte1, byte2) + " foo");
	    }
	}
    }
}
